Can washer



sept. 12, 195o Filed July 28, 1948 A. W. SMITH CAN WASHER 5 Shee ts-Sheet 1 www l www f 6111,' g 3, 'LUL I gl-.

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A. W. SMITH sept. 12, 195o CAN WASHER 5 Sheets-Sheet 2 Filed July 28, 1948 I 71 ver? Zor Mo( 63 EE0/*nalgas BQJ.

A. W. SMITH Sept. 12, 195o CAN WASHER Filed .July 2a. 1948 5. Sheets-Sheet 5 Sept. l2, 1950 A. w. sMrrH 2,522,310

CAN WASHER Filed July 28, 1948 5 Sheets-Sheet 4 Sept- 12 1950l s A. w. SMITH I 2,522,310

CAN WASHER Filed July 28. 1948 5 Sheets-Sheet 5 Patented Sept. 12, 1950 CAN WASHER Albert Woodall Smith, Kenmore, N. Y., assignor to Rice & Adams Corporation, Bualo, N. Y., a corporation oi'vNew York Application July 28, 1948, Serial No. 41,109

This invention relates to a can washer and more particularly to a washer for handling a succession of milk cans which, because of their use, are extremely diillcult to wash to the desired degree of cleanliness.

Washing milk cans used for bringing fluid milk from the farms to a dairy does not present unusual diil'iculties abecause the fresh fluid milk is readily washed away. However, when such milk cans are used to ship fluid milk long distances, or are used to ship condensed milk, or ice cream batches, or similar heavy bodied products. it is extremely diilicult to remove completely all. road dirt from the can lips, the pouring strip left on the can necks and lips, :by condensed milk or ice cream batch and also accumulations of socalled milk stone in those parts of the cans where it collects due to ineillcient washing. To cleanse such milk cans it has been proposed to provide the can with a suitable number of rising jets which are automatically .projected into the interior of each can passing through the can washer. These jets project wash and rinse water at high velocity against all internal surfaces of the can as well as the inside of the pouring lip and eiectively remove all soapl stone, heavy bodied contents, grease and dirt from these dimcult to clean cans. The present invention relates to such rising jet type of milk'can washers.

One of the principal objects of the present invention is to provide such a rising jet type of can washer in which the mechanism for projecting and retracting the jets in timed relation to the passing milk cans is of simple construction and composed of relatively few parts thereby to reduce the initial and maintenance ycost of the can washer.

Another object is to provide such a mechanism for projecting and retracting jets in timed relation to passing milk cans which has improved performance, particularly in positively holding each jet below the can track level when no can is present.

Another object is to eliminate sliding joints, particularly for the rising jets, such sliding joints having been found to bind, due to the difficulty of lubrication, and interfere with the proper operation of the rising jet mechanism.

Another object is to provide a rising jet supplied with liquid under pressure through a ilexible hose in which stretching or compression of the hose in the operation of the sliding jet is avoided and in which there is no strain, binding or interference with the operation of the rising jet by the hose. With slidingjoints whichY 11 Claims. (Cl. 134-52) hose securely clamped at one end to the rising jet and at its other end to a supply pipe, the hose was found to bind and interfere with the proper operation of the rising jet mechanism due to strains imposed on the slidingjoints or guide bearings by the stretching of the hose at the end of each stroke and compression of the hose in the middle of the stroke. In the practice of the present invention stretching and compression of the hose in the operation of the rising jet mechanism is reduced to a negligible quantity due to the hose being of approximately the same length as parallel links supporting the rising jet and the fixed ends of the hose being approximately in line with the pivot ends of such links. The moving end of the hose thereby describes a radius approximately the same as the radius described by the moving end of each link.

Another object is to provide such a mechanism for projecting and retracting jets in timed relation to passing milk cans which is composed of simple and low cost parts and which is not likely to get out of order under conditions of severe and constant use.

Another objectis to provide such rising jets which when retracted are completely hooded and held below the can track level at the time when the jets would normally rise to a can were it present at the indexed position. Such rising jet is vthereby prevented from spraying washing solutioninto the rinse water tanks and vice versa.

Other objects and advantages of the invention will appear from the following description and drawings in which:

Fig. 1 is a fragmentary side elevational view of a milk can washer embodying the present invention, with parts broken away to disclose the operating mechanism.

Fig. 2 is a fragmentary plan view of the operating mechanism shown in Fig. 1, the view being taken on line 2-2, Fig. 1.

Fig. 3 is a view similar to Fig. 1 and showing another position of the parts.

Fig. 4 is a fragmentary transverse sectional view taken on line 4 4, Fig. 3.

Fig. 5 is an enlarged fragmentary view similar to Figs. 1 and 3, of a part of the mechanism adjacent the sprayhead of one of the rising jets, this section being taken on line 5 5, Fig. 4.

Fig. 6 is a perspective view of one of the housings or casings into which the spray heads are retracted.

Fig. 'I is a perspective view of the retainer for holding a companion rising jet retracted.

Fig. 8 is a fragmentary view similar to Fig. 5 and showing another position of the parts.

Fig. 9 is a vertical sectional view taken on line 3 3. F18. 8.

Fig. 10 is a horizontal sectionalview taken on line III-Il, Fig. 5.

Fig, 11 is a vertical fragmentary section taken on line II-II, F18. 10.

Fig. 12 is a fragmentary enlarged vertical section taken generally on line |2-I2, Fig. 4.

Fig. 13 is a fragmentary horizontal section taken on line |3-I3, Fig. 12.

The can washer forming the subject of the present invention is designed to clean a succession of milk cans I5, particularly the interior of the bodies Il, breasts I8, necks I3 and pouring lips 25 of such milk cans which have been used in transporting heavy bodied products such as condensed milk or ice cream batch.

As best shown in Fig. 4 the can washer has the conventional enclosing casing through which a procession of inverted cans pass from one end t9 the other, this casing being shown as comprising an upper rectangular sheet metal hood 2| having side walls 22 and 23 and en-d walls v24, each of the latter having openings to permit the passage of the line of milk cans I5. This hood 2| is arranged above a sump or tank 25 in which the washing solution or rinse water sprayed against the exterior and interior of the line of milk cans I5 collects for recirculation through the sprays.

The sump 25 is shown as having a side wall 25 in line with the side wall 22 of the hood 2|, a bottom wall 28, a vertical wall 23 near the longitudinal center of the washer from the upper end of which an inclined drain panel 30 projects to the opposite side wall 23 of the hood 2|, and end walls and dividing partitions 3|. The sump or tank 25 can be supported on legs 32 and on the side forming the inclined drain panel 30 a removable vertical panel 33 is shown as extending from one end wall 3| of the sump or tank 25 to the other. The sump or tank 25 and inclined drain panel 33 can be divided -by the partitions 3| to divide the same into washing and rinsing sections. The dividing partitions 3I permit of dividing the washer into sections such as washing sections in which a washing solution is sprayed against the interior and exterior of the cans, and rinsing sections in which rinse water is similarly sprayed. Since such sectionalization forms no part of the present invention it can be assumed that the rising jet mechanism can be used t spray either a washing solution or rinse water into the passing line of cans.

A pair of spaced horizontal stationary rails 35 are arranged longitudinally and centrally within the hood 2|, these rails forming a track supporting the pouring lips 20 of the line of inverted milk cans l which are advanced steD-by-step along this track through the washer. In this movement the bodies I5 of the milk cans are held against lateral displacement by upper side guard rails 35 and the pouring lips 20 of the cans are held against lateral displacement by stationary lower horizontal side rails 33 arranged along opposite sides thereof.

The line of inverted cans I5 is advanced in spaced relation step-by-step along the track rails 35 from the inlet end to the outlet end of the washer, each can being advanced to the position formerly occupied by its preceding can For this purpose, as best shown in Fig. 9, a pair of longitudinally reciprocating horizontal dog bars 4I are arranged alongside the can track rail 33, each of these dog bars 45 being arranged slightly below the level of the can track rails between these rails and the lower side rails 33 and being l.- shaped inv cross section to provide a vertical flange 4I and a lower horizontal flange 42. A series of dogs 43 are shown as pivoted by pins 44 at spaced intervals to the side ange v4| of each of these dog bars 40, each of these dogs having a tail end of preponderating weight normally resting on the horizontal lower flange 42 of its dog bar and the opposite end of each of these dogs being formed to provide a tooth with an abrupt vertical shoulder faclng the direction of movement of the line of cans and an inclined face which, on the retrograde movement of the d og bar, permits the tooth of the dog to be depressed by the pouring lip 20 of the next following milk can and to rise, through the preponderating weight of its tail end, on the trailing side of the milk can to engage its abrupt face with the trailing side of the pouring lip 20 thereof. The dogs 4 3 are equally spaced along each dog bar to DIOVide a regular spacing of the milk cans I5 and the dog bars 40 are reciprocated a distance somewhat greater than the spacing of these dogs so that on each forward reciprocation of the dog bars each milk can is advanced to the position formerly occupied by its preceding milk can. The milk cans are thereby moved to successively advanced stations along the track 35, these stations being indicated by the cans shown in full and dotted lines in Fig. l, and at each of the stations the cans are permitted to remain stationary while the dog bars 4|) are going through their retrograde reciprocatory movement.

The dog bars 40 are reciprocated by any suitable mechanism (not shown) which also reciprocates, through the horizontal connecting rod 45 (Fig. 1), a link or hanger 46 supporting one end of a horizontal bar 41 arranged on one side and exteriorly of the tank so as to reciprocate this horizontal bar 41 in timed relation with the dog bars 4l). For this purpose, the horizontal bar 41 is pivoted at one end as'at 48, to the lower end of the link 45 which in turn is pivoted. as at 4l, at its upper end to a plate 5|! forming a part of the side wall 26 of the sump or tank 25 and the horizontal bar 41 is pivoted at its opposite end, as at 5|, to the lower end of a link or hanger 52 `which in turn is pivoted, as at 53, to the exterior of the side wall 25 0f the sump or tank 25. The rising jet mechanism forming the subject of the present invention is actuated by the longitudinal reciprocating movement of the horizontal bar 41 and since the movement of this bar 41 is in timed relation with the movement of the dog bars 4I, it will be seen that the rising jet mechanism is in timed relation with the dog bars 40 and hence with the step-by-step movement of the line of cans through the washer. This rising jet mechanism is shown as constructed as follows:

As best shown in Figs. l and 4, the horizontal bar 41 carries a pair of actuating or push blocks 5| which are slidable along the bar 41 and can be set at any position therealong as by set screws 52. In the path of each of these blocks 5| is arranged a-roller 53 at the lower end of a rock arm 54 which is fast to a shaft 55. Each of these shafts is journaled at its outer end in a bearing 55 secured to the wall 25 oi.' the sump or tank 25 and at its opposite end is journaled in a bearing 53 in a casing 69 fast to the wall 29 of the tank 25, as best shown in Fig. 12. Exteriorly of asaaaro the'tankwall 28 anarmilisiasttoeachrock shaft 85.y A counterweight 1| is hung on this arm 18.

A parallelogram arm 13 is also fast to this shaft 85 adjacent its inner bearings 88, this arm projecting generally horizontally in a direction opposite to the movement of the line ot milk cans through the washer, although these arms can be arranged to project in the opposite direction. of course. To the outer end of the parallelogram arm 13 is pivoted. as indicated at 14, a vertical pipe 15, this pipe projecting below the pivot 14 and being pivoted at its lower end, as indicated at 18, to a parallelogram link 18, as best shown in Figs. 1 and 3. As best shown in Figs. 1, 3 and 12, the opposite end of this parallelogram link 18 is pivoted to the casting 88 as indicated at 18. The parallelogram arms 13 and vlink 18 are of equal length between pivot centers and the spacing between the pivots 88 and 18 and the pivots 14 and 15 is equal and the ilexible hose 82 is also oi a length substantially equal to the parallelogram arm 13 and link 18 and in consequence a minimum of stretching or compressing of the hose occurs and the minimum of friction is imposed on the bearings during the vertical movement of the parallelogram arm 18 and the counterweight 1| can consequently be kept small in size. It will be seen that when the shaft 85 is rocked by the horizontally reciprocating bar 41 in a corresponding direction, the pipe is projected vertically upward. It will further be observed that this rising movement of the pipe 15 is induced by vthe counterweight 1| and that the reverse or downward movement is eiected by the blocks 5| on the horizontally reciprocating bar 41 acting against the arms 84.

The. upper end of each pipe 15 is projected upwardly into each passing can l5 as it is brought to rest thereabove at the corresponding station on the can track or rails 35 and each pipe y 15 isprovided with a nozzle or head 88 which sprays streams of washing solution or rinse water at high velocity against the inner surfaces of the pouring lips 28, neck I8, breast |8 and body I8 of the can as it rises into and descends from the inverted milk can. This washing solution or rinse water is supplied to each pipe 15 from an elbow 8| thereon which connects with a ilexible hose 82. As best shown in Figs. 12 and 13. the casting 88 is provided with a washing solution or rinse water chamber which supplies washing solution or rinse water to the ilexible hose 82 through a screw iitting 83. 'I'he chambers of the two castings 88 are connected with branches 84 of a washing solution or rinse water supply line 85 supplied with the washing solution or rinse water under pressure from the washing solution pump 88 shown in Fig. 4. The inlet 88 to this pump usually connects (not shown) with the bottom of the sump or tank 25 to recirculate the washing solution or rinse water and its outlet connects with the line 88 supplying the spray nozzles (not shown) which wash or rinse thel exterior of the line of cans I5 passing through the washer.

In its descending movement the spray nozzle 88 of each spray pipe 15 is withdrawn into a casing 88 which, as best shown in Fig. 6, comprises a bottom wall 8| having a central hole 82 through which the pipe 15 moves vertically, side walls 88 each having an apertured lug 84 in which axially alined pivot pins 85 are journaled. a lip 88 projecting upwardly from one wall 88 connecting the side walls 83, and' an ar'- cuate hood 88 concentric with the axis of the pivot pins and connected by side arms |88 with the wall |8| opposite the wall 88 and connecting the sidewalls 83. The arms |88 space the arcuate hood 88 from the wall |8| so as to provide a passage |82 therebetween. The lip 88 and upper part oi! the arcuate hood 88 are of a width equal to the space between the two can rails 35 and are inserted therebetween and suitably welded thereto as indicated at |88, Figs. 5, 8 and 9, so that the casing 88 is permanently held in fixed position.

Each casing 88 is provided with a-pivoted retainer |85 which, when disposed over the corresponding pipe 15 and nozzle prevents it lfrom rising. As best shown in Fig. 7, this retainer comprises an arcuate latch |85 secured to one end of an arm |88, the opposite end of which lis secured to a pair of arms |88, ||8, the latter being arranged to straddle the side walls 83 of lthe casing 88 and being apertured, as indicated at to pivot on the pins 85 carried by the casing 88. With the arms |88, |I8 of the retainer so pivoted on the pins 85, the arcuate latch |85 and its supporting arm |88 are in position to be swung through the passage |82 with the arcuate latch 85 traversing the inner face of the arcuate hood 88. In the closed position of the retainer |85 the free end of its arcuate latch |85 is arranged under the lip 85 rising from the wall 88 of the casing and in this position it will be seen that the pipe 15 is incapable of rising from the casing 88, its nozzle bumping upwardly against the arcuate latch |88 and being held against further upward movementk thereby.

' The arm |88 of the retainer |85 is extended beyond its aperture to provide an extension |13 which is adapted to engage a stop I |4 formed integrally on the casing 88 as shown in Fig. 6, and thereby limit the opening movement of the latch |85 of the retainer. To the extremity of this extension ||3 of the retainer arm |88 is pivoted a shipper rod ||5 which projects downwardly therefrom through an ear ||8 provided on one side of the parallelogram arm 13, as best shown in Figs. 1 and 3. The lower end of this shipper rod is preferably threaded to receive a pair of nuts I1 and a helical compression spring ||8 is interposed between these nuts and the ear |5 so that on downward movement of the parallelogram linkage the retainer |85 is swung to its operative position. However, it will be noted that upward movement of this parallelogram linkage does not swing the retainer |85 to its inoperative position, the ear ||6 merely riding along the shipper rod ||5 and having no effect upon the retainer. l

This retainer |85 is moved to its inoperative position by the passing can which operates a latch releasing the retainer so as to permit it to fall by gravity to its inopertive position. For this purpose, adjacent each of the rising spray pipes 15 and as best shown in Figs. 2, 4, 5, 9 and 10, a vertical pivot pin |28 is rotatably mounted in a bracket |2| secured to the outer side of one of the side rails 38. A trip lever I 22 is fast to the upper end of this pivot pin |28 and a latch arm |23 is fast to the lower end thereof. A pro- Jection |24 from the hub of the latch arm |23 is connected by a horizontal helical tension spring |25 with a remote part of the rail 38 carrying the bracket |2|, this spring biasing the free end ofthe trip lever |22 into the path of the pouring gsaaaio lips 20 of the passing cans I5. The extremity of the latch arm, in the normal position of the trip lever |22 (full lines, Fig. 10) engages under a catch |28 formed on the outer extremity of the retainer |05. When the pouring lip of a passing can swings the trip lever |22 clockwise as viewed in Fig. l0, the latch arm |23 is moved from under the catch |25 on the retainer |05 whereby this retainer is permitted to fall by gravity and permit the pipe 15 and its nozzle 00 to emerge upwardly from its casing 90. At the time of such release of the retainer |05, the Vpipe 15 has been moved to a fully depressed condition by its parallelogram linkage and hence the retainer is not impeded in falling by any upwardpressure of the nozzle 80 against its arcuate latch |05. The catch |26 on the retainer |05 has a rounded face |28 adapted to engage a rounded face |20 on the latch arm |23 so as to insure re-engaement between this catch and latch arm.

Operation In the operation of the can washer the inverted cans |5 are placed with their pouring lips 20 upon the supporting rails 35 at the inlet end of the can washer, this being at the right hand end as viewed in Figs. 1 through 3. The dog bar 40 is continuously being reciprocated lengthwise of these rails a distance somewhat greater than the spacing of the cans as shown by full and dotted lines in Figs. 1 and 2. The means for so reciprocating the dog bar 40 are not shown but this reciprocatlon is in timed relation to the reciprocation of the horizontal bar 41 (Fig. 1) through the connecting rod 45, the dog bar 40 and this bar 41 moving simultaneously in the same direction. Since the dog bar 40 is reciprocated a distance somewhat greater than the spacing of the milk cans shown in Figs. 1 and 2, on each retrograde movement of this dog bar the dogs 43 slide over the pouring lips 20 of the line of milk cans on the track or rail 35 and pass to the trailing 4sides thereof. On each forward movement of the dog bar 40 these dogs 43 engage the trailing edges of the pouring lips 20 of the line of milk cans and hence each milk can is shoved forwardly to the position previously occupied by the preceding milk can. The dog 43 at the inlet end of the can washer serves to engage the lip and feed into the can washer the first can of the line being fed to the can washer, and it will therefore be seen that a continuous procession of inverted cans is passed longitudinally through the can washer along the track or rail 35, each can being progressively brought to a succession of denite stations and each can being permitted to rest at each station while the dog bar 40 is going through its retrograde reciprocation.

The throw of the dog bar 40 is adjusted so that each can is brought to rest in axial alinement. rst with the rising pipe at the right hand side of Figs. 1 through 3, and thereafter with the rising pipe 15 shown generally at the center of these figures. During the iinal forward movement of the dog bar 40 to the left, as viewed in Figs. 1 and 3, in bringing the milk cans to these stations, the horizontal bar 41 is likewise approaching its extreme left hand position, this position of the parts being shown in Fig. 1, and this movement of the bar 41 being effected by the connecting rod 45. In this movement of the bar 41 to the left, as viewed in these figures, the stops 6| on this bar are in engagement with the wise as viewed in Figs. 1 and 8p This clockwise movement is imparted to each shaft Il so as to lift its counterweight 1| and also so as to depress the parallelogram arm 13 which is also fast to this shaft, as best seenin Fig. '12. This downward movement of the parallelogram link 13 causes a downward movement of the corresponding rising pipe 15, this rising pipe being held in a vertical position by virtue of the parallelogram link 'I0 connected with its lower end and which. through its pivotal mounting. is maintained in parallelism with the parallelogram arm 13. The nozzle vIl at the upper end of each pipe 15 is thereby retracted downwardly to the full line position shown in Fig. 5 in which it is out of contact with the latch |00 of the retainer |05. As each can is brought to one or the other of these particular stations, its pouring lip 20 engages and moves the trip lever |22 from the full line to the dot-dash line position shown in Fig. 10. This lever isfast to the pin |20 which also carries the latch arm |23 and in consequence this movement is against the resistance of the helical return spring |25 and operates to swing the latching arm |23 out of engagement with the catch |25 on the retainer |05. This retainer isl pivoted to the casing for the nozzle 80 of the pipe 15 by the pins and upon release of the catch |26 on this retainer by the latch arm |23 the retainer falls by gravity from the position shown in Fig. 5 to the position shown in Fig. 6, whereby the latch |05 on the retainer |05 falls downwardly out of the path of the nozzle 80 on the upper end of the rising pipe 15.

The dog bar 40 and the reciprocating bar 41 now commence their retrograde movement, this being to the right as viewed in Figs. 1 through 3. As the horizontal bar 41 so moves to the right, the arms 64 follow the blocks 6| thereon, this movement being provided by the counterweights 1| on the arms 10 fast to the shafts 55 to which these arms 04 are connected. As a result, this movement of the horizontal bar 41 to the right provides a counterclockwise movement of each shaft 55 through power derived from its counterweight 1| and this movement causes the parallelogram arm 13 and parallelogram link 10 to rise. This raises the pipe 15 carried by the outer end of each parallelogram arm and its parallelogram link, thereby to move the nozzle 00 upwardly out of the casing 00 and into the milk can arranged thereabove. Each pipe 15 is continuously supplied with washing solution or rinse water and hence as each nozzle 80 so rises into the milk can sprays of the solution or rinse water from the nozzle 80 are progressively brought against the pouring lip 20, neck I9, breast Il and interior of the body I5 of the milk can.

When the parallelogram linkage reaches the position shown in Fig. 3, the movement of the horizontal reciprocating bar 41 to the right causes the blocks 5I to leave the rollers B3 and hence the nozzles 80 are held in their fully upwardly projected position during the continued movement of the horizontal reciprocating bar 41 to the right and during the initial part of its return movement to the left. During this return movement the block 6| on the horizontal reciprocating bar 41 re-engage the rollers 03 on the arms 04 so as to swing these arms clockwise as viewed in Figs. 1 and 3. and to elevate the counterweights 1| and depress the parallelogram arm 13 and parallelogram link 18. This retracts the nozzles 00 from the cans I5 and into the casings rollers 03 and are moving the levers 04 clocku 00. Duringthe last part ofthis downward movement of the pipes 1l, the ears III come into engagement with the springs lil on the shipper rods Iii, thereby to depress these shipper rods. The downward movement of each of these shipper rods eiiects a downward movement or the extension III of the arm I" of the retainer lli. This causes the retainer lill to swing counterclockwise about thev pivot pins il so as to move the retainer from the position shown in Fig. 8 to the position shown in Fig. 5. In the position shown in Fig. the latch I of the retainer Ill is in the path of the nozzle Il on the pipe Il and it will therefore be seen that this pipe is prevented from rising from the casing 90 but is retained therein. Each pipe Il is still being sup.

plied with spray liquid under pressure, this spray water being discharged into its casing 90 and returning, without washing eiiect upon the cans, to the sump 25 for recirculation by the spray water pump li. This housing of the depressed spray heads prevents washing solution from being sprayed into the rinse water section of the washer and vice versa.

During the iinal part of the movement of the bar l1 to the left as viewed in Figs. 1 and 2, the dog bar 40 commences its forward movement to the left as viewed in these ilgures. Accordingly, the can il above each rising pipe i5 is moved along the track 35 out of alinement therewith, this also moving the can out of engagement with the trip lever |22 so that this trip lever is brought to the full line position shown in Fig. 10 under the iniluence of its return spring |25. This return spring also swings the latch arm |23 to the `full line position shown in Fig. 10 in which it is disposed above the catch |26 on the retainer IIS. Accordingly, this retainer is latched in the full line position shown in Fig. 5 until another can II moves into alinement with the pipe and again actuates the trip lever |22 to release the latch arm |23 from engagement with the catch I 2t as previously described.

From the foregoing it will be seen that the present invention provides a simple and rugged rising jet mechanism for container washers in which sliding parts, diilicult to lubricate, are avoided and in which the jets are prevented from rising in the absence of a milk can thereover and in which the jets are adequately housed, when retracted, to prevent dilation of the wash solution by rinse water escaping from the retracted jets and vice versa, and more especially to prevent undesirable spraying of the wash solution or of the rinse water into adjacent can treatment spaces as would occur were the jets allowed to rise if no can were present over the rising jet.

I claim:

1. In a can washer having a canway and an intermittently operative conveyer arranged to move each of a succession of cans to and from a station along said canway at which station each can is arrested for a period of time, the combination therewith of means for washing the interior of said can, comprising a stationary support, a pair of parallel arms pivoted to said support, a pipe pivotally connected` at the outer ends of said arms. in axial alinement with the mouth of the can at said station, said support, arms and pipe providing a parallelogram linkage, a

nozzle at the end of said pipe adjacent said can, means for supplying a iluid under pressure to said pipe, and means actuated in timed relation with said intermittently operative conveyer and actuating said parallogram linkage to pro- 10 ject and retract said nozzle into and out of such can so arrested at said station. y

' 2. In a can washer having a canway and an intermittently operative conveyer arranged to move each oi' a succession of cans to and from a station along said canway at which station each can is arrested for a period of time, the combination therewith of means for washing the interior of each can, comprising a stationary hollow support, a pair of parallel, generally horizontal arms pivoted to said support, a pipe pivotally connected at the outer ends oi' said arms in axial alinement with the mouth of the can at said station, said support, arms and pipe providing a vertically moving parallelogram linkage, a nozzle at the end oi said pipe adjacent said can, means for supplying fluid under pressure to the interior of said hollow support, a iiexible conduit approximately equal in length to and exte ding along said arms and providing comm cation between the interior oi.' said hollow support and said pipe, and means actuated in timed relation with said intermittently operative conveyer and actuating said parallelogram linkage to project and retract said nozzle into and out of each can so arrested at said station.

3. In a can washer having av canway and an intermittently operative conveyer arranged to move each of a succession of cans to and from a station along said canway at which station each can is arrested for a period of time, the combination therewith of means for washing the interior of said can, comprising a stationary support, a pair of parallel arms pivoted to said support, a pipe pivotally connected at the outer ends of said arms in axial alinement with the mouth of the can at said station, said support, arms and pipe providing a parallelogram linkage, a nozzle at the end of said pipe adjacent said can, means for supplying a iluid under pressure to said pipe, means biasing said parallelogram linkage to project said pipe into the path of said cans, a latch restraining said parallelogram linkage from so projecting said pipe into the path oi.' said cans, means actuated by each can brought to said station for releasing said latch, and means actuated in timed relation with said intermittently operative conveyer and arranged to retract said pipe out of each can so arrested at said station and to reset said latch.

4. In a can washer having a canway and an intermittently operative conveyer arranged to move each of a succession of cans to and from a station along said canway at which station each can is arrested for a period of time, the combination therewith of means for washing the interior of said can, comprising a stationary support, a pair of parallel arms pivoted to said support, a pipe pivotally connected at the outer ends oi said arms in axial alinement with the mouth of the can at said station, said support, arms and pipe providing a parallelogram linkage, a nozzle at the end o1' said pipe adjacent said can, means for supplying a fluid under pressure to said pipe, means arranged to bias said parallelogram linkage to project said pipe into the path of said cans, a retainer restraining said pipe lfrom so projecting into the path of said cans and normally falling by gravity into an inoperative position, a latch actuated by each can brought to said station to release said retainer, and means actuated in timed relation with said intermittently operative conveyer and arranged to'retract said pipe out oteach can so arrested at each station and to reset said latch.

5. In a can washer having a casing enclosing a canway and enclosing an intermittently operative conveyer arranged to move each of a succession of cans to and from Va station along said canway at wh station each can is arrested fora period o ime, the combination therewith ofui'eans for :washing the interior of each can, comprising a stationary support within said ing, a rock shaft journaledin said support, a parallelogram arm fast to said rock'shaft, a pipe pivoted on the free end of said parallelogram arm in position to be projected into the can at said station, a parallelogram link pivotally connecting said pipe and support to provide, with said support, parallelogram arm and pipe, a parallelogram linkage, a discharge. nozzle at the end of said pipe adjacent said can, means arranged to supply fluid under pressure to said pipe, an arm fast to said rock shaft, a bar mounted for reciprocation on said casing, a stop on said bar and engaging said arm fast to said 'rock shaft to oscillate the same through motion derived Yfrom the reciprocation of said bar, and means arranged to reciprocate said bar in timed relation with said conveyer.

6. In a can washer having a casing enclosing a canway and enclosing an intermittently operative conveyer arranged to move each of a succession of cans to and from a station along said canway at which station each can is arrested for a period of time, the combination therewith of means for washing the interior of each can, comprising a stationary support within said casing, a rock shaft journaled in said support and projecting exteriorly of said casing, a parallelogram arm fast to said rock shaft, a pipe pivoted on the free end of said parallelogram arm in position to be projected into the can at said station, a parallelogram link pivotally connecting said pipe and support to provide, with said support, parallelogram arm and pipe, a parallelogram linkage, a discharge nozzle at the end of said pipe adjacent said can, means arranged to supply iiuid under pressure to said pipe, means arranged to bias said parallelogram linkage to project said pipe into the path of said cans, a retainer restraining said pipe from so projecting into the path of said cans and normally held in an inoperative position, a latch actuated by each can brought to said station to release said retainer, means actuated in timed relation with said intermittently operative conveyer and arranged to retract said pipe out of each can so arrested at said station and means actuated by said parallelogram linkage for resetting said latch.

'7. In a can Washer having a casing enclosing a canway and enclosing an intermittently operative conveyer arranged to move each of a succession of cans to and from a station along said canway at which station each can is arrested for a period of time, the combination therewith of means for washing the interior of each can, comprising a stationary support within said casing, a rock shaft journaled in said support and projecting exteriorly of said casing, a parallelogram arm fast to said rock shaft, a pipe pivoted on the free end of said parallelogram arm in position to be projected into the can at said station, a parallelogram link pivotally connecting said pipe and support to provide, with said support, parallelogram arm and pipe, a parallelogram linkage, a discharge nozzle at the end of said pipe adjacent said can, means arranged to supply fluid under pressure to said pipe, means arranged to bias said parallelogram linkage to project said pipe into the path of said cans, a retainer restraining said pipe from so projecting into the path of said cans and normally held in an inoperative position, a latch actuated by each can brought to said station to release said retainer, means actuated in timed relation with said intermittently operative conveyer and arrange to retract said pipe out of each can so arres ed at said station and spring means operatively connecting said parallelogram arm andlatch and resetting said latch through motion derived from said parallelogram arm.

8. In a can washer having a canway and an intermittently operative conveyer arranged to move each of a succession of cans to and from a. station along said canway at which station each can is arrested for a period of time, the combination therewith of means for washing the interior of said can, comprising a pipe arranged to enter each can at said station, a nozzle on the end of said pipe adjacent said can, means arranged to supply uid under pressure to said pipe, means urging said pipe into the path of said cans, means actuated in timed relation with said intermittently operative conveyer and arranged to retract said pipe from said can at said station, a housing into which said nozzle is drawn when said pipe is retracted, a retainer pivoted on said housing and engaging said nozzle to pre vent movement of said pipe into the path of said cans, and latch means actuated by each can brought to said station and arranged to render said retainer inoperative.

9. In a can washer having a canway and an intermittently operative conveyer arranged to move each of a succession of cans to and from a, station along said canway at which station each can is arrested for a period of time, the combination therewith of means for washing the interior of said can, comprising a pipe arranged to enter each can at said station, a nozzle on the end of said pipe adjacent said can, means arranged to supply fluid under pressure to said pipe, means urging said pipe into the path of said cans, means actuated in timed relation with said intermittently operative conveyer and arranged to retract said pipeirom said can at said station, a housing into which said nozzle is drawn when said pipe is retracted, a retainer pivoted on said housing and having a part moving into axial alinement with said pipe to engage said nozzle and prevent movement of said pipe into the path of said cans and normally held in an inoperative position, means actuated by said pipe retracting means and moving said retainer to an operative position, and latch means actuated by each can brought to said station and arranged to release said retainer.

l0. In a can washer having a canway and an intermittently operative conveyer arranged to move each of a succession of cans to and from a station along said canway at which station each can is arrested for a period of time, the combination therewith of means for washing the interior of said can, comprising a pipe arranged to enter each can at said station, a nozzle on the end of said pipe adjacent said can, means arranged to supply uid under pressure to said pipe, means urging said pipe into the path of said cans, means actuated in timed relation with said intermittently operative conveyer and arranged to retract said pipe from said can at said said station to release said retainer. and spring 10 means actuated by said pipe retracting means and moving said retainer to said operative position.

11. In a can washer having a canway and an intermittently operative eonveyer arranged to move each of a succession of cans to and from a station along said canway at which station each can is arrested for a period of time, the combination therewith of means for washing the interior of said can, comprising a pipe arn ranged to enter each can at said station, a nozzle on the end of said pipe adjacent said can. means arranged to supply iiuid under pressure to said pipe, means urging said pipe into the path of said cans, means actuated in timed relation with said intermittently operative conveyer and arranged to retract said pipe from said can at said station, a housing into which said nozzle is drawn when said pipe is retracted, a retainer having a pair of arms embracing and pivoted to said housn 14, C ing andhaving a part movable about theaxisot its pivotal mounting and arranged to engage the extremity ot said nozzle and prevent movement of said pipe into the' path of said cans. said reg .ft'ainer being balanced to normally afall by gravity z 'to an inoperative position, spring'. means con- ='nesting one of said retainer arms with said pipe lretreating means and moving saidretainer to an foperative position through motionderived from 'said pipe retracting means, a catch on said rei-tainer, a latch pivoted adjacent said retainer and xnovable into the path of said catch to support 'said retainer in its operative position, means yieldingly urging said latch into the path of said catch. and means actuated by each can brought Said Station and arranged to move said latch to release said catch. f

ALBERT" WOODALL Sm.

REFERENCES CITED v The following references are of record in the me otthis patent:

UNITED STATES PATENTS x'Number Name Date 1,043,929 Heard Nov. 12, 1912 :1,734,585 Ladewig Nov. 5, 1929u 41,'7'153'903 Soelch Sept. 2, 1930 2,061,180 Williams Nov. 17, 1938 

